Finding the Fourth Proportional to 8,488.81, 12,729.03 and 3,490.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,488.81 : 12,729.03 = 3,490.27 : x
2. Step 2: Convert to fraction form
   8,488.81/12,729.03 = 3,490.27/x
3. Step 3: Cross multiply
   8,488.81x = 12,729.03 × 3,490.27
4. Step 4: Simplify right side
   8,488.81x = 44,427,687.89
5. Step 5: Solve for x
   x = 44,427,687.89/8,488.81
6. Step 6: Final answer
   x = 5,233.68